Device for intermittently driving cigarette-machine shafts



1,623,978 Aprll 12, 1927. c. F. ROBER DEVICE FOR INTERMITTENTLY DRIVING CIGARETTE MACHINE SHAFTS Filed Aug. 14. 1924 Patented Apr.

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CONSTANTIN. FRIEDRICH IRGBER,

SELLE CIGARETTENMASCHINENFAB MANY.

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DEVICE FOR INTEBMIT'IENTLY" DRIVING CIGARETTE-MACHINE SI'IAFTS.

Applicatio This invention relates-- to apparatus v for intermittently driving cigarettemachine: shafts, more particularly the co1l=1ngmandrel in cigarettegshell or case machines.

The invent-ion'is arr-improvement in-or modification of that fication of my prior described in; the speciapplication for patent Serial No. 7526;888, filed July 18,1924:-

The' rack of the parallel crank ofuconnecting, rod Fmechanis'n the said prior operates with the pinion coiling mandrel the rack, meshes with the application for patent coshaft in such, manner that on reaching the one dead centre pinion, remains teeth .of the in mesh with such .teeth until the other-dead centre position otth'e crank'andjconnect'ing rod mechanism is reached, and then moves out ofmesh with the pinion;

The present. application ing 1nechanism by which during the period? out of engagement 1 with-1 the locked by means of "a is driven by thecrankthat the rack .is

pinion,- the pinion is looking tooth which and, connecting-, rod

00th is provided on the one- -on disengagement of the rack gradually moves into .the teeth of'the This locking t crank disc and It the pinion.

relates to lockmechanism.

locking tooth only engages the pinion when the dead centre position hasheen reached may nothold the pinion snfliciently firmly,v

and the pinion released. it

and experience has shown that shocks occur.-

in the gearing which: with: the invention. with great rapidity. The 1 rack .is therefore in engagementiwith thedead centre positlon,

is driven in accordance so arranged thatit remains suited in accordance with the saidoprior inventionforthe disengagement ot: the rack, The rackiis maintained 1n, engagement 1111131 thelocking toothhas the lockingposition,

be held firmly on Vice versa, tl

has v been reached.

with certainty .reached so that ,thepinionwill the coiling mandrel shaft.

xelooking tooth holds the pinion firmly until the last moment, so that the pinion 18; actually held with.v complete.

certainty in looking position until the-rack has reached the second dead centre position.

of the mechanism, which is convenient for the re-engagement of the rack with the pinion to be driven. In this position a premature engagement of the rack, no matter how slight, won

1d. result in rotation of the dead centre forming the subject of;

to be driven-on the the p nion even when.

aimed-August -14; 1924:,5eria1 No.- 732,105 anddn 'Germany May'19y1924;

pinion, which, however, looked, 1s impossible.

provided with:

opposite the. pinion, the-teeth the pinion exactly has been reached, and the lockmg toot-his movediiout o'f engagement with the pinion.

F igsa-l and 2 of'the accompanying draw-- ing-show the two positions oi the" parallel crank' and connecting-'- rod" mechanism in plan, while Figs.- 1 and' 2 ti-onson the li nes-1 1 and 2 -2 and 2 respectively.

are vertical see- As shown; the rack 6 is carried means discs of-thecrankpins 7 8, of the crank 9, 10;- On: the crank disc 10' is provided-an approximately semi-circular locking tooth the-teeth of the pinion In Fig; 1 the rack 6 is shown 16; adapted' to enter 5 to be-d-riven. in that position at which it becomes-disem gaged from the pinion rotatedinthe direction: ofthe arrows). The

the dead centre di'sengagement, the lockcrank dis'cs havingreached position-for such ing toot-h 16 commences of the pinion-5.'

The-rack 6 i's so to enter the teeth.

formed that in this position it has; not yet 1 disengaged the pinionthe, dead centre 5. It is set in relation to position in such manner that it i still remains a short time in -mesh During this short time the locking tooth -16 completely; engages the-pinion 5; and thus a propen locking action of the pinion is obtained.'

From F-i'gs. 1 and' 'l it is clear'how the l teeth 6 of the mole Gare still in mesh with the'teeth 5 ot the-pinion 5, when the lockingtooth ld is-already in engagement with the pinion 5.- On further rotation ot=the mechanismthe rack 6' moves V out of "engagement witlrthexteeth of the pinion 5, as soon as the locking-tooth 16 has moved intocomwith the teeth of the plete engagement pinion 5.

When the rack 6, on reaching the other dead centre position of the mechanism (shown in Fig. 2) is to engage the pinion 5 once again, such engagement must only take 5 '(crankdi'scs 9, 10,

with the: pinion 5'.

place when looking tooth 16 has moved out of engagement With the teeth of the pinion 5, which occurs at the moment when the dead centre position of the mechanism is reached.

With the arrangement of the rack 6 just described a premature engagement of its teeth in the pinion 5 would result. In order to prevent such premature engagement the rack 6 adjacent the teeth which engage the pinion 5 is provided with a recessed portion 17, shown clearly in Fig. 1, the corresponding part of the rack being shown in horizontal section on the line 1 1 of Fig. 2*. This recess 17 is so dimensioned that the rack 6 comes in contact with the pinion 5 exactly at the moment when the dead centre position of the mechanism (shown in Fig. 2) has been reached. At this moment the tooth 16 also moves out of engagement with the teeth of the pinion 5.

Having now particularly described and ascertained the nature of my said invention, and in what manner the smile is to be performed, I declare that what I claim is 1. In an intermittent motion. mechanism, a pinion adapted to be rotated intermittently in one direction, a rack adapted to engage said pinion, means for reciprocating said rack, and for effecting an engagement thereof with the pinion for driving it during the longitudinal movement thereof in one direction, and means carried by the rack operating means for holding the pinion against turning during the movement of the rack in the reversed direction.

2. In an intermittent motion mechanism, a pair of spaced crank disks, a connecting rod therebetween including a rack, means for rotating said disks so to impart longitudinal and sidewise reciprocations to said connecting rod, a pinion adapted to be engaged to be rotated by said rack during its longitudinal movement in one direction and to be disengaged from the rack by the side wise movement thereof in one direction and to be engaged again by the sidewise movement in the opposite direction iollowin the return longitudinal reciprocating moven'ient, and means on. one of the disks adapted to engage said pinion for locking it against turning during the return longitudinal re ciprocating movement of the rack.

3. In an intermittent motion mechanism including a rack, means for imparting longitudinal and sidewise reciprocations to said rack, a pinion positioned so as to be engaged and rotated by said rack during its longitudinal movement in one direction and to be engaged by and disengaged therefrom by the sidewise movement at the beginning and end of said longitudinal movement, and means carried by the rack operating means adapted to engage said pinion and lock it against turning during the time it is disengaged from the rack.

4. In an intermittent motion mechanism, a pinion adapted to be rotated intermittently in one direction, a rack adapted to engage said pinion, means for imparting longitudinal reciprocations to said rack, and imparting sidewise reciprocations to said rack in a plane with the teeth of the pinion, and to cause the rack to disengage the pinion when the rack is practically at a stand still, and means carried by the rack reciprocating means for engaging the pinion and holding the same against rotation (hiring the move ment ot the rack in the reverse direction.

In an intermittent motion mechanisn'l, a pinion adapted to be rotated intermittently in one direction, a pair of spaced rack disks, a connecting rod including a rack, means for rotating said disks for imparting the longitudinal and sidewise reciproeations to said rack, and means carried by one of the disks for engaging the pinion and holding the same against ro ation during the movement of the rack in a reverse direction.

6. In an intermittent motion mechanism, a pinion adapted to be rotated intermittently in one directiorna pair of spaced disks, one on each side of the pinion, a connecting rod including a rack connected by wrist pins to the disks, means for rotating the disks so as to impart a longitudinal and sidewise reciprocation to said rack, and an elongated flange carried by one of the disks for engaging the pinion and holding the same against rotation during the movement oi the rack in a reverse direction.

T. In an intermittent mot-ion mecl'ianism, a pinion adapted to be rotated intermittently in one direction, a pair of spaced crank disks, one on each side of the pinion, a corn necting rod connecting the disks and including a rack, means for rotating said disks so as to impart longitudinal movement to the rack, and a sidewise n'ioveinent otthe rack in a plane with the teetho't' the pinion and cause the rack to d 'e the pinion when the same is at a nd ll. and a circumferential flange carried by one of the disks and adapted to engage the pinion and hold it against rotation. during the reversed movement thereof.

In testimony whereoit' ture.

CONSTANTIN FRIEDRICH HUBER.

I aiiix my signalit? 

